Power down on vista start up

[edarthur]

My system powers down just as windows vista tries to start. Motherboard is a GBT-M61VMES2. New power supply, new video and sound cards. Hard drive seems fine. Same results when I boot from my vista cd. Always powers down at the same point. Worked fine with the previously mentioned hardware for several months.

 

[ourtut]

it sounds like a bad psu or mobo. New does not always mean 100% working.
What psu do you have?

 

[suteck]

My system powers down just as windows vista tries to start. Motherboard is a GBT-M61VMES2. New power supply, new video and sound cards. Hard drive seems fine. Same results when I boot from my vista cd. Always powers down at the same point. Worked fine with the previously mentioned hardware for several months.

We could use a system configuration and maybe we can get a better picture of what's going on. You have a new video card? Which kind is it? It might require more power than your new psu can provide. bios and startup don't use many graphics but windows vista does especially with aero involved. You also got a new psu? Again, what brand and wattage is it? Have you tried disconnecting the video card and using the on board video? there is a small selection of video cards that will work on that board so make sure your new card is on the approved list. And I'm not sure what this means but it's on Gigabytes listing for you board

1. 1 PCI Express x 16 slot (Note 2)
2. 1 PCI Express x 1 slot
3. 2 PCI slots

(Note 2) The GA-M61VME-S2 supports up to PCI Express x1 mode. (please refer to the VGA cards support list)
So I'm not sure exactly what that's trying to tell us. Does it mean that you can only use a 1x video card? However, the items below are all supported under the Windows XP operating system. When using an add-on graphics card, please first delete the onboard graphics driver before installing the driver for the add-on graphics card.) I'm sure this is a MUST!

Here is their list of supported graphic cards >
PCI Express x16 Cards

Graphics Chip Maker Model Name
Nvidia
Gigabyte GV-NX53128D
Gigabyte GV-NX57128D
Gigabyte GV-NX59128D
Gigabyte GV-NX62128D
Gigabyte GV-NX66128DP2
Gigabyte GV-NX68T256DH
Gigabyte GV-NX55128DP
Gigabyte GV-NX68U256D-B
Gigabyte GV-NX62TC128D
Gigabyte GV-3D1
Gigabyte GV-NX66L128DP
Gigabyte GV-NX68256D
Gigabyte GV-NX78X256V-B
Gigabyte GV-NX78T256V-B
Gigabyte GV-NX79T256DP-RH
Gigabyte GV-NX76G256D-RH
Gigabyte GV-NX73T256D-RH
Gigabyte GV-NX73L128D-RH
Gigabyte GV-NX65128DE
Nvidia P502/P602
Nvidia 7900GTX
ASUS EN6600GT/TD/128
ASUS EN6600/TD/128
MSI NX6800GT-TD256E
Leadtek WinFast PX6600GT TDH
ELSA GLADIAC 760GT
ELSA GLADIAC 790GT

ATi
Gigabyte GV-RX30S128D
Gigabyte GV-RX30HM128D
Gigabyte GV-RX30128D
Gigabyte GV-RX60P128DE
Gigabyte GV-RX60X128V
Gigabyte GV-RX70128D
Gigabyte GV-RX70P128D
Gigabyte GV-RX80T256V
Gigabyte GV-RX80L256V
Gigabyte GV-RX80256D
Gigabyte GV-RX55128D
Gigabyte GV-RX85T256V-B
Gigabyte GV-RC850T256D-B
Gigabyte GV-RX13P256D-RH
Gigabyte GV-RX16P256D-RH
Gigabyte GV-RX18L256V-B
Gigabyte GV-RX18T512V-B
Gigabyte GV-RX19X512VB-RH
Gigabyte GV-RX16P256DE-RH
Gigabyte GV-RX13128D-RH
ASUS AX800XT
ASUS AX700PRO
MSI RX600 XT-TD128

And I know it's basic but make sure you have BOTH the 24 pin and the other 4 pin power connectors plugged in. The 4 pin usually helps supply power to the PCIe lanes so it's important.
Once you've done all this homework let us know If I missed something or you have any other questions about it.